I wanted to report on the tires during my trip to Missouri over this last long weekend.
I put about 1,900 miles on my new Warden AT's and my average mileage increased 1.5 mpg, over the Mickey Thompson Baja's. They have a small hum, but they far surpass my expectations and I can talk in a normal tone to people in the XJ, as well as folks on the phone. My speedometer is off 5 mph, according to my GPS.
While on location, I was off-road a bit on the farm I was visiting and surprisingly to me, and the guy that owns the place, I only went into 4H, twice. It was very wet with a few inches of snow on the ground. There is a pic in my album of the XJ after winching a hickory tree out of the woods. I crossed a frozen creek in the woods, heading uphill after exiting, and never spun a wheel. I just kept it slow.
I am VERY pleased with my Treadwright purchase.